Recombinant Anti-HLA-DRB4 antibody [EPR7182] - BSA and Azide free (ab248902)
Key features and details
- Produced recombinantly (animal-free) for high batch-to-batch consistency and long term security of supply
- Rabbit monoclonal [EPR7182] to HLA-DRB4 - BSA and Azide free
- Suitable for: IHC-P, WB
- Reacts with: Human
Related conjugates and formulations
Overview
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Product name
Anti-HLA-DRB4 antibody [EPR7182] - BSA and Azide free
See all HLA-DRB4 primary antibodies -
Description
Rabbit monoclonal [EPR7182] to HLA-DRB4 - BSA and Azide free -
Host species
Rabbit -
Tested applications
Suitable for: IHC-P, WBmore details
Unsuitable for: Flow Cyt,ICC/IF or IP -
Species reactivity
Reacts with: Human -
Immunogen
Synthetic peptide. This information is proprietary to Abcam and/or its suppliers.
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General notes
ab248902 is the carrier-free version of ab140612.
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. The carrier-free buffer and high concentration allow for increased conjugation efficiency.
This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.
Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.
This product is a recombinant monoclonal antibody, which offers several advantages including:
- - High batch-to-batch consistency and reproducibility
- - Improved sensitivity and specificity
- - Long-term security of supply
- - Animal-free production
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.
Properties
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Form
Liquid -
Storage instructions
Shipped at 4°C. Store at +4°C. Do Not Freeze. -
Storage buffer
pH: 7.2
Constituent: PBS -
Carrier free
Yes -
Concentration information loading...
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Purity
Protein A purified -
Clonality
Monoclonal -
Clone number
EPR7182 -
Isotype
IgG -
Research areas
Associated products
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Alternative Versions
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Conjugation kits
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Isotype control
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Positive Controls
Applications
The Abpromise guarantee
Our Abpromise guarantee covers the use of ab248902 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Application | Abreviews | Notes |
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IHC-P |
Use at an assay dependent concentration. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
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WB |
Use at an assay dependent concentration. Detects a band of approximately 30 kDa (predicted molecular weight: 30 kDa).
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Notes |
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IHC-P
Use at an assay dependent concentration. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol. |
WB
Use at an assay dependent concentration. Detects a band of approximately 30 kDa (predicted molecular weight: 30 kDa). |
Target
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Function
Binds peptides derived from antigens that access the endocytic route of antigen presenting cells (APC) and presents them on the cell surface for recognition by the CD4 T-cells. The peptide binding cleft accomodates peptides of 10-30 residues. The peptides presented by MHC class II molecules are generated mostly by degradation of proteins that access the endocytic route, where they are processed by lysosomal proteases and other hydrolases. Exogenous antigens that have been endocytosed by the APC are thus readily available for presentation via MHC II molecules, and for this reason this antigen presentation pathway is usually referred to as exogenous. As membrane proteins on their way to degradation in lysosomes as part of their normal turn-over are also contained in the endosomal/lysosomal compartments, exogenous antigens must compete with those derived from endogenous components. Autophagy is also a source of endogenous peptides, autophagosomes constitutively fuse with MHC class II loading compartments. In addition to APCs, other cells of the gastrointestinal tract, such as epithelial cells, express MHC class II molecules and CD74 and act as APCs, which is an unusual trait of the GI tract. To produce a MHC class II molecule that presents an antigen, three MHC class II molecules (heterodimers of an alpha and a beta chain) associate with a CD74 trimer in the ER to form an heterononamer. Soon after the entry of this complex into the endosomal/lysosomal system where antigen processing occurs, CD74 undergoes a sequential degradation by various proteases, including CTSS and CTSL, leaving a small fragment termed CLIP (class-II-associated invariant chain peptide). The removal of CLIP is facilitated by HLA-DM via direct binding to the alpha-beta-CLIP complex so that CLIP is released. HLA-DM stabilizes MHC class II molecules until primary high affinity antigenic peptides are bound. The MHC II molecule bound to a peptide is then transported to the cell membrane surface. In B cells, the interaction between HLA-DM and MHC class II molecules is regulated by HLA-DO. Primary dendritic cells (DCs) also to express HLA-DO. Lysosomal miroenvironment has been implicated in the regulation of antigen loading into MHC II molecules, increased acidification produces increased proteolysis and efficient peptide loading. -
Sequence similarities
Belongs to the MHC class II family.
Contains 1 Ig-like C1-type (immunoglobulin-like) domain. -
Post-translational
modificationsUbiquitinated by MARCH1 and MARCH8 at Lys-254 leading to sorting into the endosome system and down-regulation of MHC class II. When associated with ubiquitination of the alpha subunit of HLA-DR: HLA-DRA 'Lys-244', the down-regulation of MHC class II may be highly effective. -
Cellular localization
Cell membrane. Endoplasmic reticulum membrane. Golgi apparatus > trans-Golgi network membrane. Endosome membrane. Lysosome membrane. Late endosome membrane. The MHC class II complex transits through a number of intracellular compartments in the endocytic pathway until it reaches the cell membrane for antigen presentation. - Information by UniProt
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Database links
- Entrez Gene: 3126 Human
- SwissProt: P13762 Human
- Unigene: 534322 Human
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Alternative names
- DR 4 antibody
- DR beta 4 chain antibody
- DR4 antibody
see all
Images
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Anti-HLA-DRB4 antibody [EPR7182] (ab140612) at 1/1000 dilution + Raji cell lysate at 10 µg
Secondary
HRP labelled goat anti-rabbit IgG at 1/2000 dilution
Predicted band size: 30 kDa
Observed band size: 30 kDaThis data was developed using ab140612, the same antibody clone in a different buffer formulation.
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This data was developed using ab140612, the same antibody clone in a different buffer formulation.Immunohistochemical analysis of paraffin embedded Human colon tissue labelling HLA-DRB4 using ab140612 at 1/100 dilution Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
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This data was developed using ab140612, the same antibody clone in a different buffer formulation.Immunohistochemical analysis of paraffin embedded Human tonsil tissue labelling HLA-DRB4 using ab140612 at 1/100 dilution. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
Protocols
To our knowledge, customised protocols are not required for this product. Please try the standard protocols listed below and let us know how you get on.
Datasheets and documents
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Datasheet download
Certificate of Compliance
References (0)
ab248902 has not yet been referenced specifically in any publications.